Some of the things I learned in college"Marrige is societies aproval of two peoples mating habbits.
Marrige's sole purpose is the explotation of women.
Finaly,
No soliologist is ever happily merried.
If you are in a relationship were you are sexually exploited, than yes that is what marrige will mean to you. If a woman takes what she wants from sex, and enjoys herself (not just having sex becasue her husband wants to), then it will tend to be better. The one thing my wife told me is that she has sex with me for her not me. I don't really care as long as I am getting sex.
Marrige is what you make of it. Just as anything else is. The more you worry about being exploited the more you will be. That is why alot of women have problems having an orgasm. Men figured this one out a long time ago (sex is fun, enjoy it). Good luck to you!